Core-shell Al2O3/Al composite powder preparation process

A composite powder and preparation process technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of reduced performance, uneven distribution of enhanced phases, etc., and achieve the effects of less energy consumption, easy control, and simple operation.

Inactive Publication Date: 2012-04-25
JIUJIANG UNIVERSITY
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Problems solved by technology

[0004] Its object of the present invention is to overcome above defect and provide a kind of core-shell formula Al 2 o 3 / Al composite powder preparation process, not only can solve the disadvantages of aluminum matrix composites due to the uneven distribution of reinforcement phases, but also surface-treat Al powder raw materials, and introduce reinforcement phases with excellent performance in one or more phases , to prepare the core-shell Al 2 o 3 / Al composite powder

Method used

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  • Core-shell Al2O3/Al composite powder preparation process
  • Core-shell Al2O3/Al composite powder preparation process

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Embodiment 1

[0010] Embodiment 1, as shown in the accompanying drawing, a kind of core-shell formula Al 2 o 3 / Al composite powder preparation process, first 25% Al 2 o 3 powder into a planetary high-energy ball mill tank for ball milling at a speed of 500r / min for 1 hour, and then add 75% of Al powder to the milled Al 2 o 3 The powder is ball milled together at a speed of 100r / min for 12 hours to obtain the shell-core Al 2 o 3 / Al composite powder.

[0011] Embodiment 2, as shown in the accompanying drawing, a kind of core-shell formula Al 2 o 3 / Al composite powder preparation process, first 15% Al 2 o 3 Put the Al powder into a planetary high-energy ball mill tank for ball milling at a speed of 100r / min for 6 hours, then add 85% of Al powder to the milled Al 2 o 3 The powder is ball milled together at a speed of 500r / min for 0.5 hours to prepare the shell-core Al 2 o 3 / Al composite powder.

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Abstract

The present invention relates to a core-shell Al2O3 / Al composite powder preparation process. According to the preparation process, 1-49% of Al2O3 powder is added to a planetary high-energy ball mill tank to carry out ball milling for 1-6 hours at a rotation speed of 100-500 r / min; then 51-99% of Al powder is added to the ball milled Al2O3 powder to carry out ball milling for 0.5-12 hours at a rotation speed of 100-500 r / min to prepare the core-shell Al2O3 / Al composite powder. The preparation process of the present invention has advantages of simple and convenient operation, easy control and less energy consumption. The core-shell characteristics of the prepared core-shell Al2O3 / Al composite powder raw material can be precisely controlled by adjusting the process conditions, wherein the core-shell characteristics of the prepared core-shell Al2O3 / Al composite powder comprise thickness, density, uniformity and the like.

Description

technical field [0001] The invention belongs to ultrafine materials and preparation methods thereof, and relates to an inorganic powder and a preparation method thereof, in particular to a core-shell Al 2 o 3 / Al composite powder preparation process. Background technique [0002] Cermet is a heterogeneous composite material composed of metal or alloy and one or more ceramic phases, of which the latter accounts for about 15% to 85% of the volume of the material. At the preparation temperature, the gap between the metal phase and the ceramic phase The dissolution is very weak. Cermet not only maintains the high hardness, wear resistance, corrosion resistance, high temperature resistance, oxidation resistance and chemical stability of ceramic materials, but also has the high strength, high toughness and high thermal conductivity and electrical conductivity of metal materials. The composition makes the ceramic-metal composite material have high hardness, thermal strength and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/04
Inventor 宋杰光王芳李养良李世斌纪岗昌王秀琴
Owner JIUJIANG UNIVERSITY
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